Dickinson Police say clean up is still underway, after a chemical spill on Dickinson Bayou.

According to the Dickinson Police Department, a sulfonate solution from processing plant Calumet-Penreco was found floating in the Dickinson Bayou on Saturday. That prompted a shutdown of all recreational activity on the water, to allow for clean-up crews to work.

According to police, Calumet-Penreco has indicted the solution isn’t hazardous, flammable, or corrosive, and less than 250 gallons of the product were lost. In an e-mailed statement, Dickinson police said, “The accidental release is reportedly a result of a damage valve due to the freezing temperatures earlier in the week.”

Here’s more information, from the Dickinson Police Department:

“The product is a mixture of oily water, sulfonate solution, and emulsifiers used to lubricate drill bits and act as a rust inhibitor. The product overflowed from a catch reservoir at a slop oil tank. Less than 250 gallons of product was lost. Once company officials were aware of the leak, additional employees were brought in and the company began immediate containment operations prior to the environmental response company’s arrival. Company officials have been working closely with local and state officials. The product will not mix with the water or sink to the bottom of the bayou, which will help with cleanup efforts.

Calumet Dickinson Refining produces food grade and pharmaceutical grade mineral oil in the portion of the plant where the leak occurred.”

Two environmental response teams worked on clean-up efforts through the weekend, and they were still cleaning up on Monday morning.

Officials say Dickinson Bayou will remain closed until further notice.